Taxis from the San Francisco airport, unless booked in advance, charge the "double-the-meter" rate. The only reasonably priced options are ride-sharing services such as Uber or Lyft, or the Supershuttle. The San Jose airport is similar except taxis normally charge the regular rate from there to Palo Alto.
The area around Stanford has many hotels with a wide range of prices. However, many hotels book unreasonably far in advance, so early reservations are strongly recommended.
To register, please send an email to email@example.com. Please put "JBK registration email" in the subject line. There will be a charge for the workshop dinner, collected in some manner prior to dinner. Otherwise, registration is free but we do need a head count for dinner, so please do register. Please, also indicate in the email if you are interested in the hike on Sunday.